In case anyone is curious... someone who is married to a US citizen and they have a green card application sent in, they do not need to leave the country even if it's not yet approved. USCIS sends back a document stating you are legally allowed to remain in the country. Even with an expired visa.
The New York TimesThe Trump administration has begun arresting foreign citizens with expired U.S. visas at airports, including spouses of Americans, according to documents obtained by The New York Times and interviews with immigration lawyers. nyti.ms/45r7OBZ